Home of the King of the Hammers race, the world's toughest one-day off-road race. Combines rock crawling and desert racing in 4400 class (unlimited) and multiple spec classes.
Ultra4 Racing is an off-road racing series sanctioned by Ultra4 Racing. Founded in 2007. Home of the King of the Hammers race, the world's toughest one-day off-road race. Race Team Wiki indexes 3 Ultra4 Racing teams.
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